A. Ballarino, 21/11/2014 Wrap up from WP6 A. Ballarino for the WP6 CERN, Geneva KEK, 21 st November th Hi-Lumi LHC Extended Steering Committee Task leaders: A. Ballarino, U. Wagner (CERN) Y. Yang (University of Southampton), F. Broggi (INFN)

A. Ballarino, 21/11/2014 Presentations Tuesday, 18/11/2014  Status of project and future milestones, A. Ballarino  Radiation aspects at LHC P7, P1 and P5 C. Adorisio Wednesday, 19/11/2014  Cryo for Superconducting Links, S. Claudet  Progress on cryostat design, Y. Yang  Update on electro-thermal behaviour of superconducting cables in the links, Y. Yang  Update on integration studies at LHC P1, P5 and P7, Y. Muttoni Thursday, 20/11/2014  Update on energy deposition studies at IP1, C. Santini  Preliminary results on energy deposition studies at IP7, A. Bignami

A. Ballarino, 21/11/2014 P1 P6 P4 P2 P8 P3 P5 P7 P1 P6 P4 P2 P8 P3 P5 P7 Betatron Cleaning Collimators CMS ATLAS R2E R2E  Powering of arc Hi-Lumi  Powering of Triplets + D1 Hi-Lumi  Powering MSs R2E  Powering of arc Hi-Lumi  Powering of Triplets + D1 Hi-Lumi  Powering MSs SC Links for LHC A. Ballarino

A. Ballarino, 21/11/ SC Links at LHC P7 R2E SC Links at LHC P1 and P5 R2E + Hi-Lumi SC Links for LHC A. Ballarino R2E Workshop at CERN in October 2014

A. Ballarino, 21/11/2014 L = 20 m (25  2) 1 25 K, LHC Link P7 SC Link, LHC P7

A. Ballarino, 21/11/ kA Six cables,  = 19.5 mm Concentric  3 kA Seven cables,  = 8.4 mm 0.4 kA Four cables 0.12 kA Eighteen cables  ext  65 mm High-Current Rating, LHC P1 and P5 18 MgB 2 wires  = 6.5 mm Cu MgB 2,  = 0.85 mm Hi-Lumi Triplets and D1 Mass  11 kg/m (880 kg for  H=80 m)

A. Ballarino, 21/11/2014 I c Measurements Short Samples – 4.2 K To characterize and qualify the wire, critical current measurements on 15 cm-long samples are carried out in parallel magnetic field Billet MFT 2810 T0.2 T0.5 T1 T2 T3 T No. of samples Average I c [A] RMS I c % Max I c % Min I c % B. Bordini, EUCAS 2013

A. Ballarino, 21/11/2014 MgB 2 Cables developed and tested at CERN I = 20 kA T = 24 K Bp = 1 T  T along line  1 T Launched procurement of 150 km of MgB 2 wire A. Ballarino

A. Ballarino, 21/11/2014 Y. Yang, University of Southampton Problems for a Single DFH with Multiple Chimneys of Current Leads The chimney assembly of LHC DFC becomes difficult for DHF of SC link: 1.Constraints of transport to TZ76 require the in-tunnel integration of current leads. 2.Installation of current leads is tricky due to limited height in TZ76. 3.Splice of SC link in situ requires substantial side access, leading to oversized cryostat, too tight for the TZ75 width.

A. Ballarino, 21/11/2014 Y. Yang, University of Southampton 1. Individual current leads 3. Electrical interconnection box 2. Superconducting link WP6.3 New DHF Design for P7

A. Ballarino, 21/11/2014  Compact DFH design assembled in tunnel with fully open access for inter-connection to SC link  Discrete current lead units flexibly attached to DHF via HTS cables in transfer-line  Easily transported within the tight constraints in TZ76. WP6.3 New DHF Design for P7 Y. Yang, University of Southampton

A. Ballarino, 21/11/2014 WP6.4 Measurements on the Quench Characteristic of MgB 2 Twisted-Pair Cables MQE (j) j= I / I C I C = 1600A at 25K 750A /25K Y. Yang, University of Southampton

A. Ballarino, 21/11/2014  Installation of the Super Conducting Link passing through the LSS7: evaluation of detailed Work and Dose Planning is needed to optimize the intervention  For the removal of the DFBX and the installation of the SC links the evaluation of detailed Work and Dose Plannings is needed to optimize the interventions (working and passaging through activated area (inner triplet area) and activated equipment (e.g. TCL collimators, TAN) Point 1 Point 7 Point 3 C. Adorisio, CERN IR7 – LS3, 1 month of cooling time Radiation aspects at P7, P1 and P5

A. Ballarino, 21/11/2014 Cryogenics for SC Links For P1 & P5, a completely new cryogenic distribution system will be studied and implemented: the needs for the sc links will surely be part of the design and associated optimisation. The potential vertical part might need specific study (transient, stability) For P7, a cooling process compatible with existing constraints exists since spring’14, we would be ready to proceed with definition of piping & valve requirements S. Claudet, CERN

A. Ballarino, 21/11/2014 IP7 Overview of Point 7 DFAM position DFAN position DFHA positions SC links Y. Muttoni, CERN

A. Ballarino, 21/11/2014 Y. Muttoni, CERN Integration at LHC Point 7

A. Ballarino, 21/11/2014 Integration of Cold Powering System at LHC P7 Ducts SC Links RR 73 RR77 TZ76 UJ76 Option 1: simplified routing Option 2: more complex routing routing Integration tests at CERN in Spring 2015 using a 60 m long SC Link (cryostat + cable) to verify the two options – and select the most convenient Y. Muttoni, CERN

A. Ballarino, 21/11/2014 Integration of Cold Powering System at LHC P7 Space reserved for collimators ?

A. Ballarino, 21/11/2014 Existing fenced limit 8) WARM COMPRESSOR (Conc) Dimension: 15 x 40 = 600m2 Hmax = 9m Services (in;out): HV, water, Cryo pipes ; ? 20t crane not costed 7)SD (Steel) Dimension: 20 x 30 = 600m2 Hmax = 12.0m Services (in;out): HV, water, SC Links ; ? Crane not costed (20t ?) (8) MACHINE SIDE, WITH NEW SHAFT + PC (7) Shaft New fenced limit Landscaping Area New fenced limit 10) PARKING, ROADS, GALLERIES Car Park: 20 places added New Road: 180m(L), 8m(W) New Access road: 70m(L), 6.5m(W) Galleries for services: 110m(L), Cross section2.0m(W) by 2.5m(H) Landscaping: 6,600m2 Car park John Osborne, Martin Manfredi GS-SE-PAS Point 5 Option surface: all other equipment

A. Ballarino, 21/11/2014 DFMJ5L DFMJ5R Point KA (x2) + 16KA DFHX calibration ERD 3.2KA (x5) 200A (x12)Cooling/Ventilation 49.5 m RF Cavern 100 m Power Converter Cavern 144 m RF + Power Converter Cavern Cryo Cavern: 23m Crab Cavity DFXJ5LDFXJ5R UJ57 UJ53 PM54 USC55 86 m 8 Cores Emergency Exit DFMJ Option: underground Surface or underground installation: huge implication on system design Activity on test of vertical SC-Link start in Jan 2015

A. Ballarino, 21/11/2014 UJ76 TZ76 R771 RR77 Sc Link in P7 – Radiation aspects

A. Ballarino, 21/11/2014 Dose at LHC P7 The maximum dose is about 40 kGy integrated over a period of 30 fb -1 If also we extrapolate proportionaly to 3000 fb -1 we will obtain only 4 MGy over the whole period of exercise